Which initiator electrically initiates FMU-139 tail fuzes?

Which initiator electrically initiates FMU-139 tail fuzes?

• A. FZU-22
• B. FZU-48
• C. FZU-50
• D. FZU-60

Answer: (B)

Electric initiation of fuzes depends on using the specific initiator that matches the fuze design. The FMU-139 tail fuze is designed to be wired to and triggered by the FZU-48 initiator, which provides the exact electrical impulse and timing required to energize the fuze’s detonation sequence once arming has been verified. Other initiators have different electrical characteristics and physical interfaces, so they wouldn’t reliably initiate the FMU-139 tail fuze or could disrupt the arming process. Therefore, FZU-48 is the correct initiator for FMU-139 tail fuzes.

Electric initiation of fuzes depends on using the specific initiator that matches the fuze design. The FMU-139 tail fuze is designed to be wired to and triggered by the FZU-48 initiator, which provides the exact electrical impulse and timing required to energize the fuze’s detonation sequence once arming has been verified. Other initiators have different electrical characteristics and physical interfaces, so they wouldn’t reliably initiate the FMU-139 tail fuze or could disrupt the arming process. Therefore, FZU-48 is the correct initiator for FMU-139 tail fuzes.